Practical concern analysis on the detection probability for satellite-based AIS

Detection probability is one of the most important criteria in the satellite-based automatic identification system. It represents how many vessels can be detected in the monitoring area of the system. However, existing research often neglects practical factors in S-AIS (satellite-based AIS) and cannot assess the performance of a practical system. In this paper, we propose a much detailed collision model by considering both the effects of SINR (Signal to Interference plus Noise Ratio) caused by antenna patterns and the demodulation performance. Through this model, we can construct much more accurate and reasonable detection probability calculation method. Simulation results show that the detection probability from the proposed practical model is much larger than that from the legacy model.